Lock and night-latch mechanism.



A. ARBNS a. E. L. "TE-IGH'. LOOK AND NIGHT LATCH MEGHANISM.

APPLXATION FILED #UG-.13,1910. V Patented Jan. 3, 1911.

A. ARENS 6L E. L. TEICH.

Loox AND NIGHT LATCH MBGHANISM.

APPLIOTION FILED AUG. 13, 1910. 980,180;y Patented Jan. 3, 1911.

UNITED STATES PATENT carica.

AUGUST RENS ND EIEtNES-Lv L. TEICH,-0F NEW BRITAIN, CCONNECTICUT,V ASSIGNORS TO & F. CORBIN, OF NEW BRITAIN, CONNECTICUT, A CORPORATION.

LOCK AND NIGHT-LATC MIEHANISM.

escaso.

Spccicaton ot Letters Patent.

Patented Jan. 3, 1911.

To all whom 'it may concern:

Be it- Aknown that we, AUGUST Anania and L Triton, citizens of the United States, residing atNeve lritain, county of Hartford, State of Connecticut, have invented cer-tain neuT and useful Improvements in Lock and Night-Latch Mechanisms, of which the following is a full, cleanland eX` act description.

- Our invention relates to locks, and is particularly concerned with improved safety devices foi` preventing tampering 'with the so-called night latch mechanism thereof.

Locks of the character to which thisA in vention relates are provided with separate and independent roll-backs for withdrawin the latchbolt operated by the inner an outer knobs respectively. lVith the outer rollback a socalled night latch mechanism is employed to prevent rotation of said rollbaclrbythe outenknob when desired. These locks, furthermore", are provided with means for deadlcking th`e latch bolt when the door is closed to reventretraction of the bolt by insertion o a'suitable implement be. tween the door 'jamb and the edge of the door. It is also found necessar in locks ofv this character torevent unaut. o'rized tampering with the night latch mechanism in a similar manner by insertion of-an instrument between the door jamb. and the door,Y and to this end, our invention contemplates mechanism for this ur ose comprising means operable by. the atc bolt deadlocking means to.' dead-dock said night latch mechanism in operative position. p

With these o jects in view the inventiony consists inthe constructionand arrangement of parts, a` referred embodiment of which is illustrate in the accompanying drmyings,l

tional view on the to the left,` andwith the cover plate and .usual cylinder lock mechanism inplace.

Figure lis a side view of tho .loclt lwith the cover anism in operative' position. Fig. 2 isa scction. Fig. 'l is a plan view ot the .latch bolt'. Fig. 5's a vieur .ofthe latch bolt latev removed with the.-parts. shown in't e osition assumed 'iyhen the. door is open an with the night latch mechj ne '--w Fig. 1, looking' 4.dead-locking lever detached. Fig. 6 is a Jview of one member of the night latch mechanism detached, and Fig. 7 is a view of the night latch dead-locking lever which isoperated by the latch-bolt dead-locking lever. In the embodiment of our invention herein selected for illust-ration, 1 indicates the lock case; 2 the face plate in which a-s ring' latch bolt 3 is guided, the stem 4 o being provided with a spring 5 which normally projects the same and having at. its rear end a cross head 6 arranged to copsa1d bolt crate with the usual cam arm of a cylinder lock mechanism or other suitable keyoperated means, said cross-head also coperating with a roll-back oke 7 mounted upon the stems 8 and 9, said volte being held by springs 10 and 11 on said stems in operative engagement with the outer roll-back 12 and the lnner roll-back 13 (the latter being shown in dotted outline). The outer rollback is provided with an extension 14, notched at 15 to receive the locking projection 16 :of .one member'l' of the night latch mechanism. Said member 1"(` is provided with the usual push button 18 guided in theff.l faceplate 2 and is connected by -lever'i-lg with the second member 20 of the ni litiatchmechanism, the latter having-a pus h"utton` 214. The night latch mechanism isthro'wn on by pushing in the member 17'\vhereby the locking pro3ection 16 engages .the outer roll-back l2 and is thrown oi by pushing Vin the member 20. which through the lever 19 releases ,the member 17 from the roll-back. Said mechanism may be held iu the on or olf position by any suitable' form of spring; f

v he latch bolt sprovided with the usual safety l'dead-locking' means com )rising the The lever 22'is normally he d in ilioperative'. position indicated in Fig. 1 when the door is open by the tail piece .2T-of a controller-28 of Well known form, which controller is retracted by thestriker 4plate and *lever A22 pivoted at 23 on the loc caseysaid f lever' having an extension 24; cdaptedto' bef .movedbehind a shoulder 25 b a spring-'2.6'.y

heldin retracted position when the door-iseled face 30 adapted to lie beneath the in` @lined portion 31 of the lever .222 Awhich, when the lever is in operative position, as shown in Fig. 3. serves to release the latch bolt when it is by either the inner or outer knobs through their respective roll-backs. It is obvious however that when the outer roll-back is dead-locked by the night latch member 17, the latch boltis eilectually blocked against operation by thel outer knob.

To prevent tampering with the night latch mechanism when in operative position as described, we provide a dead-locking member 32 pivoted on 'the lock case at 33 and having an arm 34 engaging a notch or slot 35 in an arm 36 of the lever 22. Said dead-locking member 32 also has an arm 37 adapted to engage in front of a shoulder 38 of a night latch member 17 when the latter is in o erative position as shown in Fig. 3. A ence, when the door is closed and tliedead-locking lever 22 is in operative-position, F ig. 3, the night latch mechanism when alsoin operative posit-ion is etfectually blocked against 25 release when the door isclosed.

VVhiIe we have herein described 'a particu` lar embodiment of our-invention, it is obvi-` ous thesanie may be altered in detail and relative arrangementlo'f-parts within scope ofthe appended. claims.

That we claim is: 'i Y l. In a loch, a latch boltga' dead docking lever therefor arranged 'to move into opera-V tive position upon closing/the door,.a rollback operable from theI outer side ot'-` the door, deafllocking mechanism therefor and means separate from fbutoperable by said dead-locking lever to block said roll-back deadilocking means against release when thev -lU door is closed.

2. In 4a' lock, a latch bolt., a dead-locking lever ,therefor adapted to move into operative'position when the door is closed, 'a rollback for said bolt iiorinally operable from the outer side fof A means for Said roll-back .and a separate le ver operable by said dead-locking lever to block 4said roll-back dead-locking means against release when the door is closed.

o 3. ln a lock, a latch-bolt, aldead-locking desired to operate the latter l the face plate. olf

the

the 'door, deaddocking;i I

I lever therefor, a controller for said lever adapted to throw the same into inoperative position When'thedoor is open and 'permit the same to move to opera tive position when the door is clo'sed, a roll-back for s'id latch bolt o erable from the outer side of the door,

'deadocking means for said roll-back and a lever operable by said bolt dead-lockinU le` ver to block said rolllback dead-loc 'ng means against release when the door is closed.

v4. In a lock, a latch bolt, a dead-locking member therefor, a controller cooperating with said member the lat-ter -When the mit the same to move to operative position when the door is closed, a roll-back for said latch bolt operable only from the outer side -of the door,` a deadflocking slide for saidl roll-back liaviiioineans extending ,through the lock whereby the saine may be moved to operative and inoperative position and means separate from but operahle directly by said latch bolt deadlocking member to block said roll-back deadlocking means against release Whcnjthedoor is closed.-

5. In -a loc-lr, a'latch bolt, a dead-locking lever therefor, spring-actiiated to operative position, a controller for said leveroperated bythe -striker.. late to perm'it Saidleverto move to operative position when the door is closed, said controllerbeing-adapted to move osition` when the.

said lever to linoperative door is open, a roll-back or-said latch bolt operable only from the outer side of the idoor, a manually-operable dead-locking slide -for saidiollback,a dead-locking member for saidslide separate from .but operable by said dead-locking lever adapted to be to operative moved v osition to prevent releaseof and adapted to release door 4is open and to per- 65- said dead-loc'ringlslide ivien thexdoor ,is Y- closed. by .movement of said- .dead-locking positiokii ivith respect gto.,

n AUGUST Aaiivs.

lever to operative said latch bolt.

ERNEST L TEIQH. Witnesses: l 1

' Roscoe L. SESs1oNs,-

" WM. V: COLLINS. 

